Tjelvar Odsjö: Eggshell thickness and levels of DDT, PCB and mercury in
eggs of osprey (Pandion haliaetus (L.)) and marsh harrier (Circus
aeruginosus (L.)) in relation to their breeding success and population
status in Sweden.

Göran Nordlander: Systematics and phylogeny of an interrelated group of
genera within the family Eucoilidae (Insecta: Hymenoptera, Cynipoidea).